Homeworld, the first 3 levels:
1st level, standard tutorial but with this brilliant scene of the mothership powering up and launching from orbital dock for the first time and culminating in you test firing its hyperspace engine to meet a supply ship.
2nd level, you jump to the supply ship only to find its destroyed and you have unknown incoming, you know somethings wrong because your species only just regained the ability to hyperspace but the solar systems been explored and was uninhabited, you emergency jump back home.
3rd level, as you come out of hyperspace adagio for strings starts playing and you know its gonna be bad....your entire homeworld is ablaze, you recieve mono-tone updates from fleetcommand about whats happening on the ground, reports that all orbital infrastructure is gone...but wait we have emergency beacons....6 massive cryo-trays containing the last remnants of your population (600k, 100k per tray) are still intact...wait 1 of them is going offline, view cut to 4 assault frigates of a totally different ship design are using the last of your population as a live fire excercise and 1 cryo-tray is at 40/20% health.
This totally pulled me into the game, I HAD to get the last few survivors to their mythical birth world Higara and lord have mercy on any stupid enough to get in my way, pirate raiders, nebula dwelling space nomads and the entire imperial taidan navy all were purged in storms of fire and metal
also the cutscenes after each mission epecially the third one when you capture an assault frigate "the captain and crew did not survive interrogation" .
special mention for the final level thats just throws the entire taidan navy at you from multiple directions overwhelming waves and at the last second allied forces jump in on top of you but you have no way of knowing that, to you its just another hyperspace signature near your mothership (which is fragile as hell) and whats left of your battered forces are already engaged, out numbered, out gunned and now out flanked (and probably low on fuel for non capital ships) and then the comm message comes in that they are your reinforcements and that sense of relief.
when people tell me games are not art and are incapable of being art I just tell them to play homeworld from start to end
